Methods and apparatus for facilitating the determination of...

G - Physics – 01 – S

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G01S 19/05 (2010.01) H04W 4/02 (2009.01) G01S 19/06 (2010.01)

Patent

CA 2498369

Methods and apparatus for facilitating the determination of Global Positioning System (GPS) location information for a mobile station without disrupting communications of a voice call (e.g. a 911 emergency call). In one illustrative example, the mobile station causes GPS navigational-type data to be regularly or periodically received and stored in memory prior to the voice call. At some point in time, the mobile station receives a voice call request to initiate the voice call. In response, the mobile station derives GPS assistance data based on the GPS navigational-type data. The mobile station then causes a GPS fix to be performed using the GPS assistance data, to thereby obtain GPS measurement data. Thereafter, the mobile station causes the voice call to be established and maintained through the wireless network. The GPS measurement data is transmitted to a location server for calculating the location of the mobile station.

Méthodes et appareil pour faciliter la détermination d'information sur l'emplacement par un système mondial de localisation (GPS) d'une station mobile sans interrompre une communication vocale (par exemple un appel d'urgence au 911). Dans un exemple, la station mobile fait en sorte que les données de navigation GPS soient régulièrement ou périodiquement reçues et stockées en mémoire avant la communication vocale. € un certain moment, la station mobile reçoit une demande de lancement d'une communication vocale. En réponse, la station mobile génère des données d'assistance GPS en fonction des données de navigation GPS. La station mobile fait ensuite en sorte qu'un point de repère GPS soit établi à l'aide des données d'assistance GPS, afin d'obtenir des données de mesure GPS. Par la suite, la station mobile fait en sorte que la communication vocale soit établie et maintenue par le réseau sans fil. Les données de mesure GPS sont transmises à un serveur de localisation pour le calcul de l'emplacement de la station mobile.

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